This code sends an email to the email address wantabe2@gmail.gom as listed in the code. Instead of the code pointing to the websites listed in the code, is there a way for me to edit it so I can input my own SMTP server? It looks like to code goes to a URL & then uses it to send the email but can't I not use my own 192.168.1.5 SMTP server & edit that line?

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I think the short answer to your question is no or at least not easily.

There is a processing script at that URL (results.php) that takes all of the data provided for the email and assembles it and then sends the email to the address you provide. If you have access to that script then you may be able to modify it use your smtp configuration.